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Methods of test for aluminium fluoride for industrial use. Determination of silica content.
STANDARD published on 28.2.1974
Designation standards: BS 4993-3:1974
Publication date standards: 28.2.1974
SKU: NS-69218
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: British technical standard
Category: Technical standards BS
Fusion of a test portion with sodium carbonate/boric acid, dissolution of the melt in nitric acid, formation of the yellow (oxidized) silico-molybdic complex, reduction to the blue form and spectrophotometric measurement at 815 nm. Status: Confirmed
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